docs: def dyld_find(name, executable_path=None, env=None):
      """
      Find a library or framework using dyld semantics
      """
      name = _ensure_utf8(name)
      executable_path = _ensure_utf8(executable_path)
      for path in dyld_image_suffix_search(chain(
                  dyld_override_search(name, env),
                  dyld_executable_path_search(name, executable_path),
                  dyld_default_search(name, env),
              ), env):
          if os.path.isfile(path):
              return path
      raise ValueError, "dylib %s could not be found" % (name,)